RiiVolution Won't Show Up In Homebrew Channel

A couple of days ago I decided that I wanted to try downloading Newer Super Mario Bros onto my Wii- I followed Primalus's Instructables article, downloaded the Homebrew Channel, and extracted the game files onto my SD card, but after putting the RiiVolution files into the apps folder nothing showed up on my Wii. I tried following the tutorial the Newer Team provided on their website too but that didn't work either.

I have a 4.3U system menu, a formatted SD card, and a fully functional retail copy of New Super Mario Bros. If anyone is able to help I'd be very appreciative!